We have a regularly-updated file of all the cave entrances for the entire Schvartzmooskögel system (SMK). This file also includes the tracks of the paths we regularly take: from Loser Alm car park to the col and to top camp, and from top camp to Fisch Gesicht Höhle and to Tunnocks's, Balkonhöhle and Organhöhle.
We regularly create a new version of this essential data as the expo progresses and as expoers discover new entrances and devise new routes to reach them.
To get the most recent version you will need to ask someone who is competent in using the version control system (it's in loser/gpx/ and is generated from the survex data by a script). A fairly recent copy (17 July 2018) can be downloaded from here: essentials.gpx (190K).
This is where it gets tricky because every device and phone app does this differently.
These can only import cave entrance locations (waypoints) and paths (tracks) using the Garmin communication protocol. This means that you need special software on your laptop in addition to a USB cable that connects your laptop to the Garmin device.
Connect the GPS device to your laptop (or the expo laptop) using the USB cable. A folder will open on the laptop showing the contents of the device. You will see a subfolder called "GARMIN". Open the folder "GARMIN" and copy the file essentials.gpx which you downloaded into that folder.
This should work the same way whether you have an iPhone or an Android phone, so long as you are using this app www.gpsessentials.com.
Visit the website and read the manual (top left, on the menu bar: "Manual") for how to do this. Except that the manual doesn't tell you. More documentation on this to follow...